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Chemistry Exam
| Question | Answer |
|---|---|
| Group 1 elements (except for H) | Alkali metals |
| Group 2 elements | Alkaline earth metals |
| Groups 3-12 | Transition elements |
| Group 17 elements | Halogens |
| Group 18 elements | Noble gases |
| The lowest allowable energy stay of an atom | Ground state |
| The minimum amount of energy that can be lost or gained by an atom | Quantum |
| A particle of electromagnetic radiation with no mass that carries a quantum of energy | Photon |
| A three dimensional region around the nucleus of an atom that describes in electron’s probable location | Atomic orbital |
| Which of the following can you conclude based on the de Broglie equation? | All matter has an associated wavelength |
| Which of the following best describes the Heisenberg uncertainty principle? | It is impossible to know both the velocity and the position of a particle at the same time |
| Elements in the same group have the what? | Same number of valence electrons |
| What is the general trend in atomic radii as you move from left to right across a period? | Generally decreases |
| How many electrons does an atom generally need and its outer level to be the most stable? | 8 |
| Anion | A negatively charged ion |
| Cation | A positively charged ion |
| Delocalized electrons | Electrons that are free to move in metals |
| The tendency of an atom in a compound to attract electrons | Electronegativity |
| The electrostatic force that holds oppositely charged particles together | Ionic bond |
| The particle formed when two or more atoms bonded covalently | Molecule |
| The charged particle containing only one atom | Monatomic ion |
| A charged particle containing more than one atom | Polyatomic ion |
| A kind of bond in which there is Unequal sharing of electrons | Polar covalent |
| A model that shows how the atoms are arranged in a molecule | Structural formula |
| VSEPR model | A model used to determine molecular shape |
| And ionic compound whose aqueous solution conducts electricity | Electrolyte |
| Where does a subscript that indicates the number of atoms appear relative to a chemical symbol in a formula? | To the lower right |
| In the formation of a covalent bond electrons are what? | Shared |
| Which of the following elements normally exist in the form of diatomic molecules? | Nitrogen |
| Which of the following molecules contains a triple bond? | Nitrogen |
| Avogadro’s number | 6.02×10^23 |
| An equation that shows all of the particles in solution as they actually exist | Complete ionic equation |
| A reaction in which a compound breaks down into two or more elements or new compounds | Decomposition reaction |
| A reaction involving the exchange of positive ions between two compounds dissolved in water | Double replacement reaction |
| Molar mass | Mass in grams of one mole of any pure substance |
| SI base unit used to measure the amount of a substance | Mole |
| The ratio between the numbers of moles of any two substances in a balanced chemical equation | Mole ratio |
| An equation that includes only the particles that participate in the reaction | Net ionic equation |
| Precipitate | A solid produced during a chemical reaction in a solution |
| The study of quantitative relationships among the amounts of reactants used in the amount of products formed by a chemical reaction | Stoichiometry |
| A reaction in which two or more substances react to produce a single product | Synthesis reaction |
| Solute | The most plentiful substance in a solution |
| Solvent | Substance dissolved in a solution |
Created by:
Alyssabearr